Re: "El Cheapo" dummy heads? (Bo Gehring )

Subject: Re: "El Cheapo" dummy heads?
From:    Bo Gehring  <bgehring(at)FP3D.COM>
Date:    Thu, 5 Jul 2001 13:03:09 -0400

I had some success ~1985 with cheap silicon rubber pinnae which were sold to be used in hearing aid shops to teach the proper insertion of hearing aids. I don't remember where the distributor was located. The pinnae were of high quality and clearly had been molded from some individual rather than sculpted. These worked well in heads based on foam mannequin heads but with the addition of sculptors' plastilene to more nearly approximate an accurate head in shape and in density around the ear. Knowles BT-1759 mikes were mounted at the eardrum rather than the entrance to the ear canal. Using a wig seemed to help, too. Also, for you Kemar enthusiasts there are some images at which may be of interest. Bo Bo Gehring Focal Point 3D Audio ----- Original Message ----- From: "Didier A. Depireux" <didier(at)ISR.UMD.EDU> To: <AUDITORY(at)LISTS.MCGILL.CA> Sent: Thursday, July 05, 2001 11:03 AM Subject: Re: "El Cheapo" dummy heads? > On Thu, 5 Jul 2001, Peter Marvit wrote: > > > dummy heads can be quite useful for making binaural > > recordings but are rather expensive. > > I put two pictures of dummy heads we use for binaural recordings. They are > on > Probably not Kemar quality, for at 3.95$, you can't complain. On of the heads > is covered with a latex-kind of plastic, and the ear(s) is (are) not present > (in the picture). Using the same product, we cast the ears of a 'volunteer' > in the lab. These ears are on the other picture. There's of course a > microphone in the bottom of each ear. It gives us interesting HRTFs, which > are good enough for developing algorithms in sound localization and the like. > > > Didier > > -- > Didier A Depireux didier(at) > Neural Systems Lab > Institute for Systems Research Phone: 301-405-6557 (off) > University of Maryland -6596 (lab) > College Park MD 20742 USA Fax: 1-301-314-9920 > ------------------------------

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